package vip.xiaonuo.vein.service.sn;

public interface SnNoGenerateStrategy {

    int CODE_LENGTH = 4;

    String str = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";

    String getSnNo(String deviceNo);

}
